1905. ] OF PHYTOPHAGOUS COLEOPTERA, 497 
6. The basal spots absent ; each elytron with a narrow, oblique 
band from the middle of the base to the lateral margin 
below the middle. 
ec. The extreme basal margin, connected with a narrow sub- 
lateral longitudinal stripe, black. 
d, Elytra with two basal small spots and another at the middle. 
In all these forms the anterior and posterior margins of the 
thorax are more or less black, and frequently this colour occupies 
the entire middle of the disc, leaving only the sides testaceous ; 
the eyes are closely approached, and the head at the vertex is 
generally finely punctured and wrinkled, but sometimes im- 
punctate ; the metatarsus of the hind legs is scarcely typical of 
Oedionychis, being rather more elongate, but not to such an extent 
as to include the species in Asphera. The form with three black 
spots can scarcely be distinguished from O. humeralis Fab., but in 
that species all the specimens I have seen have a unicolorous 
testaceous thorax, without any markings, and no black basal 
elytral margin. All the specimens before me (16) come from the 
Amazon regions. 
Llytra pale, with spots and bands combined. 
OEDIONYCHIS PARALLINA, Sp. Nn. 
Head and breast black ; thorax testaceous, impunctate ; elytra 
extremely minutely punctured, flavous, two spots at the base, two 
others below the middle, and a transverse band at the latter place 
black ; legs testaceous, apex of the posterior femora black, 
Length 6-7 millim. 
Of posteriorly slightly widened shape, rather flattened ; the head 
black, the vertex minutely granulate and punctured, frontal 
elevations very broad, trigonate, eyes extremely large, carina 
acute ; palpi flavous ; antenne rather robust, the basal four and the 
apical three joints flavous, the rest black, third and following 
joints nearly equal; thorax more than twice as broad as long, the 
sides gradually but broadty flattened, the posterior margin straight, 
the anterior angles not produced, the disc impunctate, testaceous ; 
scutellum black; elytra extremely minutely and closely, almost 
confluently punctured, testaceous, the shoulders with an elongate 
black spot, another round spot near the scutellum ; a transverse 
narrow band at the middle and two spots near the apex, placed 
transversely, likewise black; breast black; abdomen and legs 
testaceous, the posterior femora black at the apex. 
Hab. Brazil. 
Easily known by the pattern of the elytra and system of 
coloration. The male insect is of considerably smaller size and 
much narrower. 
OEDIONYCHIS COLOMBIANA, Sp. n. 
Piceous, above testaceous, the apical joints of the antenn» and 
